i have both of these planes , the omp edge is just absolutely awsome. it will do it all climbing flat spins tumbles harriers, you name it it will do it and hovers like a dream.
not putting the sledge down now it is a good plane also , as of my expirernce with it , it does not do the tumbles or the flat spins as well. i do believe that it hovers a little easier.
i would build another omp edge but would not build another sledge. if you have any specific questions feel free to ask me.
Chad